Using wlan0 device over tap0 device with BHyve?

[Aryeh Friedman]

It sometimes doesn't like adding both the lan nic and tap to the bridge at
the same time


On Wed, Oct 9, 2013 at 7:30 PM, Craig Rodrigues <rodrigc at freebsd.org> wrote:

> Hi,
>
> I am using this script to set up my tap device before
> running BHyve:
>
> =================================================================
> #!/bin/sh
>
>
> #iface=em0
> iface=wlan0
>
> ifconfig bridge0 create
> ifconfig tap0 create
> ifconfig bridge0 addm $iface addm tap0 up
>
> sysctl net.link.tap.user_open=1
> sysctl net.link.tap.up_on_open=1
> =================================================================
>
>
> If I change the value of "iface" so that it uses em0 instead of
> wlan0, networking works without a problem in my BHyve VM, and my BHyve VM
> can send out a DHCP request, and get an address.
>
> However, if I set the value of "iface" to wlan0, to use the wireless NIC
> in my laptop, then networking does not work in my BHyve VM, and
> my BHyve VM tries to send out a DHCP request to get an address, but it
> doesn't go out over the network.
>
> Any ideas why this isn't working for me?
>
> ================================================================
> em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>
>
> options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO>
>         ether e4:11:5b:55:a2:2c
>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>         media: Ethernet autoselect
>         status: no carrier
> iwn0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 2290
>         ether 8c:70:5a:1b:92:54
>         nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
>         media: IEEE 802.11 Wireless Ethernet autoselect mode 11ng
>         status: associated
> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
>         options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
>         inet6 ::1 prefixlen 128
>         inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
>         inet 127.0.0.1 netmask 0xff000000
>         nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
> wlan0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0
> mtu 1500
>         ether 8c:70:5a:1b:92:54
>         inet 10.2.1.110 netmask 0xffff0000 broadcast 10.2.255.255
>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>         media: IEEE 802.11 Wireless Ethernet MCS mode 11ng
>         status: associated
>         ssid Blahblah channel 1 (2412 MHz 11g ht/20) bssid
> 20:aa:4b:38:55:91
>         country US authmode WPA2/802.11i privacy ON deftxkey UNDEF
>         AES-CCM 2:128-bit AES-CCM 3:128-bit txpower 11 bmiss 10 scanvalid
> 60
>         bgscan bgscanintvl 300 bgscanidle 250 roam:rssi 7 roam:rate 64
>         protmode CTS ampdulimit 64k ampdudensity 8 -amsdutx amsdurx shortgi
>         wme roaming MANUAL
> bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
> 1500
>         ether 02:3e:3a:7a:d0:00
>         nd6 options=9<PERFORMNUD,IFDISABLED>
>         id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
>         maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
>         root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
>         member: tap0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
>                 ifmaxaddr 0 port 6 priority 128 path cost 2000000
>         member: wlan0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
>                 ifmaxaddr 0 port 4 priority 128 path cost 33333
> tap0: flags=8902<BROADCAST,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
>         options=80000<LINKSTATE>
>         ether 00:bd:8e:95:01:00
>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>         media: Ethernet autoselect
>         status: no carrier
> ================================================================
>
> --
> Craig
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